I'm Sakib

This project is an AI-driven knowledge management platform that allows users to transform static Google Docs into an interactive chatbot. The core functionality centers on a Retrieval-Augmented Generation (RAG) system which acts as a dynamic brain for the AI. Users can sync their documentation in a read-only format, and the system processes this information to provide precise, context-aware answers to user queries. To make this technology accessible to other developers, I architected and published a production-ready React npm package. This allows for seamless integration into external Next.js and React applications with a single import statement. To support the business logic of the platform, I developed a sophisticated SaaS billing engine using Stripe that automates the entire lifecycle of a subscription, including upgrades, downgrades, and failed payment handling, while utilizing feature-flagging to enforce plan limits such as restricting free users to a single active application. The most significant technical challenge I encountered during development was establishing a secure and user-friendly connection between the platform and a user's Google Docs library. My initial architectural approach required users to navigate the Google Cloud Console to generate and upload a service account credential JSON file. However, I quickly realized that this was a major friction point because the process is highly technical and intimidating for non-developers, which would have severely limited the platform's adoption. To solve this, I pivoted to implementing a Google OAuth2 integration. This allowed me to replace a complex manual setup with a familiar and secure "Sign in with Google" flow. By requesting specific scopes, the platform can now gain authorized read-only access to a user’s documents with a single click, providing a much smoother onboarding experience while maintaining high security standards.

• Node Js
• Prisma
• PostgreSQL
• Next Js
• Stripe

Next Commerce is a comprehensive e-commerce platform designed to deliver a seamless experience for customers, vendors, and administrators. Built with Next.js, Node.js, and PostgreSQL , it ensures high performance, scalability, and security.Administrators have full control over the platform, including managing users, vendors, and product categories. Suspended accounts are automatically deleted after 30 days. Vendors can create and manage their shops, add and edit products, track inventory, and view order histories. Customers can explore products using advanced filters, compare similar items, follow shops, and leave reviews after purchases.

• Next js
• Tailwind CSS
• Typescript
• Node.js
• Express.js

Next Commerce is a comprehensive e-commerce platform designed to deliver a seamless experience for customers, vendors, and administrators. Built with Next.js, Node.js, and PostgreSQL , it ensures high performance, scalability, and security.Administrators have full control over the platform, including managing users, vendors, and product categories. Suspended accounts are automatically deleted after 30 days. Vendors can create and manage their shops, add and edit products, track inventory, and view order histories. Customers can explore products using advanced filters, compare similar items, follow shops, and leave reviews after purchases.

• Next js
• Typescript
• Tailwind CSS
• Node.js
• Express.js

This car wash and service booking application enables users to explore various car-related services and book available time slots. Users can easily find the service they need, select a convenient slot, and confirm their booking. Administrators have the ability to manage user roles, create and customize booking slots based on the service type, and oversee all bookings to ensure efficient operation.

• React js
• Tailwind CSS
• Typescript
• Node.js
• Express.js